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  • asp.net MVC HandleError

    - by boris callens
    How do I go about the [HandleError] filter in asp.net MVC Preview 5? I set the customErrors in my web.config file <customErrors mode="On" defaultRedirect="Error.aspx"> <error statusCode="403" redirect="NoAccess.htm"/> <error statusCode="404" redirect="FileNotFound.htm"/> </customErrors> and put [HandleError] above my Controller Class like this: [HandleError] public class DSWebsiteController: Controller{ [snip] public ActionResult CrashTest() { throw new Exception("Oh Noes!"); } } Then I let my controllers inherit from this class and call CrashTest() on them. Visual studio halts at the error and after pressing f5 to continue, I get rerouted to Error.aspx?aspxerrorpath=/sxi.mvc/CrashTest (where sxi is the name of the used controller. Off course the path cannot be found and I get "Server Error in '/' Application." 404. This site was ported from preview 3 to 5. Everything runs (wasn't that much work to port) except the error handling. When I create a complete new project the error handling seems to work. Ideas? --Note-- Since this question has over 3K views now, I thought it would be beneficial to put in what I'm currently (asp.net mvc 1.0) using. In the mvc contrib project there is a brilliant attribute called "RescueAttribute" You should probably check it out too ;)

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  • cl.exe Difference in object files when /E output is the same and flags are the same

    - by madiyaan damha
    Hello: I am using Visual Studio 2005's cl.exe compiler. I call it with a bunch of /I /D and some compilation/optimization flags (example: /Ehsc). I have two compilation scripts, and both differ only in the /I flags (include directories are different). All other flags are the same. These scripts produce different object files (and not just a timestamp difference as noted below). The strange thing is that the /E output of both scripts is the same. That means that the include files are not causing the difference in object files, but then again, where is the difference coming from? Can anyone elucidate on how I am seeing two different object files in my situation. If the include files are causing the difference, how come I see identical /E output? PS. The object files are different not only in the timestamp, but in the code sections also. In fact the behavior of my final executable is different in both cases. Edit: PSS: I even looked at the /includeFiles output of cl.exe and that output is identical. The object files, however, differ in more than just the timestamp (in fact, one is 1KB bigger than another!)

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  • RegAsm for Class Library Used in VB6 Application

    - by michael.lukatchik
    To be short and to the point, I've built a C# class library that is both COM-Visible and Registered for COM Interop. I've compiled the library, which resulted in the generation of .dll and .tlb files. I have another machine that's running a VB6 application. So, I copied the .dll and .tlb files over to C:/Windows/system32 folder on the machine. I then registered those files using the following: C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm C:\Windows\system32\TestClass.dll /tlb:TestClass.tlb After the files were registered successfully, I added a project reference to the Test.tlb file from inside my VB6 app, then I tried to invoke a method in my new referenced class like so: Dim myObject As TestNamespace.TestClass Set myObject = New TestNamespace.TestClass MsgBox (myObject.TestMethod()) It doesn't work, and I receive a -2147024894 Automation Error. I've read that I shouldn't install the dll into a private folder like system32. I should either be registering in the GAC or I should be registering in another location using the "/codebase" option: C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm C:\TestClass.dll /tlb:TestClass.tlb /codebase Is there any reason I shouldn't be using system32? Past devs that have worked on this project have placed assembly files used by this VB6 project into system32 and there haven't seemed to be any issues. When I register my dll in the system32 location, I get the Automation Error. When I register my dll in another location (i.e. C:/), the method call into my class library from VB6 works as expected. What gives? I should mention that we will NOT be using the GAC to register any DLL's. That's just the way it is. Any help is appreciated. Mike

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  • How to Debug an exception: Type is not marked as serializable... when the type is marked as serializ

    - by rism
    I'm trying to: ((Request.Params["crmid"] != null)) in a web page. But it keeps throwing a serialzation exception: Type 'QC.Security.SL.SiteUser' in assembly 'QC.Security, Version=1.0.0.1, Culture=neutral, PublicKeyToken=null' is not marked as serializable. The type is however marked as serializable as follows: [Serializable()] public class SiteUser : IIdentity { private long _userId; public long UserId { get { return _userId; } set { _userId = value; } } private string _name; public string Name { get { return _name; } } private bool _isAuthenticated; public bool IsAuthenticated { get { return _isAuthenticated; } } private string _authenticationType; public string AuthenticationType { get { return _authenticationType; } } I've no idea how to debug this as I cant step into the serializer code to find out why its falling over. The call stack is only one frame deep before it hits [External Code]. And the error message is next to useless given that type is clearly marked as serializable. It was working fine. But now "all of a sudden" it doesn't which typically means some dumb bug in Visual Studio but rebooting doesn't help "this" time. So now I dont know if it's a stupid VS bug or a completely unrelated error for which Im getting a serialization exception or something I'm doing wrong. The truth is I just dont trust VS anymore given the number of wild goose chases Ive been on over the last several months which were "fixed" by rebooting VS 2008 or some other rediculous workaround.

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  • [NSFetchedResultsController sections] returns nil?

    - by Chris
    Hi Everyone, I am trying to resolve this for days at this stage and I'm hoping you can help. I have two ViewControllers which query two different tables from the same database using Core Data. The first ViewController is opened with the app and displays fine. The second is called from within the first ViewController, using a pretty standard fetch setup: - (NSFetchedResultsController *)fetchedClients { // Set up the fetched results controller if needed. if (fetchedClients == nil) { // Create the fetch request for the entity. NSFetchRequest *fetchRequest = [[NSFetchRequest alloc] init]; // Edit the entity name as appropriate. NSEntityDescription *entity = [NSEntityDescription entityForName:@"Clients" inManagedObjectContext:managedObjectContext]; [fetchRequest setEntity:entity]; // Edit the sort key as appropriate. NSSortDescriptor *sortDescriptor = [[NSSortDescriptor alloc] initWithKey:@"clientsName" ascending:YES]; NSArray *sortDescriptors = [[NSArray alloc] initWithObjects:sortDescriptor, nil]; [fetchRequest setSortDescriptors:sortDescriptors]; // Edit the section name key path and cache name if appropriate. // nil for section name key path means "no sections". NSFetchedResultsController *aFetchedResultsController = [[NSFetchedResultsController alloc] initWithFetchRequest:fetchRequest managedObjectContext:managedObjectContext sectionNameKeyPath:nil cacheName:@"Root"]; aFetchedResultsController.delegate = self; self.fetchedClients = aFetchedResultsController; [aFetchedResultsController release]; [fetchRequest release]; [sortDescriptor release]; [sortDescriptors release]; } return fetchedClients; } When I call [self.fetchedClients sections], I get a nil (0x0) return. I have examined the database using an external application to ensure data exists in the "Clients" table. Can anyone think of a reason why [self.fetchedClients sections] would return nil? Many thanks for any help you can provide. Regards, Chris

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  • ERROR! (Using Excel's named ranges from C#)

    - by mcoolbeth
    In the following, I am trying to persist a set of objects in an excel worksheet. Each time the function is called to store a value, it should allocate the next cell of the A column to store that object. However, an exception is thrown by the Interop library on the first call to get_Range(). (right after the catch block) Does anyone know what I am doing wrong? private void AddName(string name, object value) { Excel.Worksheet jresheet; try { jresheet = (Excel.Worksheet)_app.ActiveWorkbook.Sheets["jreTemplates"]; } catch { jresheet = (Excel.Worksheet)_app.ActiveWorkbook.Sheets.Add(Type.Missing, Type.Missing, Type.Missing, Type.Missing); jresheet.Visible = Microsoft.Office.Interop.Excel.XlSheetVisibility.xlSheetVeryHidden; jresheet.Name = "jreTemplates"; jresheet.Names.Add("next", "A1", true, Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing); } Excel.Range cell = jresheet.get_Range("next", Type.Missing); cell.Value2 = value; string address = ((Excel.Name)cell.Name).Name; _app.ActiveWorkbook.Names.Add(name, address, false, Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing); cell = cell.get_Offset(1, 0); jresheet.Names.Add("next", ((Excel.Name)cell.Name).Name, true, Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing); }

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  • Chrome troubles...

    - by GaVrA
    Take this site for example: http://pms.rs/contact Everything is just fine just by using this css for textarea: #kontakt input, #kontakt textarea{ width:250px; } #kontakt textarea{ height:150px; } But ofc chrome is always smarter and in it user can drag that bottom right corner of textarea and resize it to the size he likes. Call me control freak, but that is very dumb thing to have if no other browser is using that. On sites like this it is not a big deal, but somewhere it can cover the entire content and for me personaly, i like to limit as much as possible what user can do so he does not break my site(like for example adding too large images in posts on forums...). So i have to do something like this: #kontakt input, #kontakt textarea{ width:250px; } #kontakt textarea{ height:150px; max-height:150px; max-width:250px; } Just so i get chrome to play as all other browsers do... While i was typing this i realised that i really dont have any question per se, but i just thought to share this with SO public, so i will mark this as community wiki. Also some other things i noticed are inputs, i always have to put width for input or textarea just because chrome is always not rendering them as he should.

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  • WPF ValidationRule Validate when the control is loaded

    - by PaN1C_Showt1Me
    Hi ! I have a control with this validation <MyPicker.SelectedItem> <Binding Path="Person.Value" Mode="TwoWay" UpdateSourceTrigger="PropertyChanged" NotifyOnValidationError="True"> <Binding.ValidationRules> <rules:MyValidationRule ValidationType="notnull"/> </Binding.ValidationRules> </Binding> </MyPicker.SelectedItem> This is the Validation Class: class MyValidationRule : ValidationRule { private string _validationType; public string ValidationType { get { return _validationType; } set { _validationType = value; } } public override ValidationResult Validate(object value, CultureInfo cultureInfo) { ValidationResult trueResult = new ValidationResult(true, null); switch (_validationType.ToLower()) { case "notnull": return value == null ? new ValidationResult(false, "EMPTY FIELD") : trueResult; default: return trueResult; } } } Question: When the property is changed, then the Validate( ) method is called which is correct. But to call this method at the very beginning when the MyControl is created? I need to prove immediate after initialize if the there's a null value in the control (and display a validation error)

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  • how to close popup using javascript with xml formatting

    - by Michael Robinson
    I bought this program that created a pretty nice imageuploader flash script however I can't get the Javascript function close window to close the popup and redirect the original page. here is the XML piece that defines the url's: <urls urlToUpload="upload.php?" urlOnUploadSuccess="http://www.home.com/purchase.html" urlOnUploadFail="http://www.home.com/tryagain.html" urlUpdateFlashPlayer="http://www.home.com/flashalternative.html" jsFunctionNameOnUpload=""/> This last line calls a javascript function on upload. The problem is I don't know what to call and where to put it. Here is the HTML file that is the popup: <HEAD> <title>Baublet Uploader</title> <script type="text/javascript" src="swfobject.js"></script> </HEAD> <BODY> <!-- Q-ImageUploader www.quadroland.com --> <div id="QImageUploader"> Flash Player stuff here </div> <script type="text/javascript"> // <![CDATA[ var so = new SWFObject("q_image_uploader.swf", "imageuploader", "650", "430", "9", "#FFFFFF"); so.addParam("scale", "noscale"); so.addParam("salign", "TL"); so.addVariable("AdditionalStringVariable","pass additional data here"); so.write("QImageUploader"); // ]]> </script> I found this Closing script I thought might work: <script language="javascript"> function close_window(page) { window.opener.location.href=page setTimeout(function(){window.close()},10); } </script> Does this go into the Popup HTML page above or would it be a separate close.js file in the root? Thanks, I'm really confused.

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  • Java Concurrency : Synchronized(this) => and this.wait() and this.notify()

    - by jens
    Hello Experts, I would appreciate your help in understand a "Concurrency Example" from: http://forums.sun.com/thread.jspa?threadID=735386 Qute Start: public synchronized void enqueue(T obj) { // do addition to internal list and then... this.notify(); } public synchronized T dequeue() { while (this.size()==0) { this.wait(); } return // something from the queue } Quote End: My Question is: Why is this code valid? = When I synchronize a method like "public synchronized" = then I synchronize on the "Instance of the Object == this". However in the example above: Calling "dequeue" I will get the "lock/monitor" on this Now I am in the dequeue method. As the list is zero, the calling thread will be "waited" From my understanding I have now a deadlock situation, as I will have no chance of ever enquing an object (from an nother thread), as the "dequeue" method is not yet finised and the dequeue "method" holds the lock on this: So I will never ever get the possibility to call "enequeue" as I will not get the "this" lock. Backround: I have exactly the same problem: I have some kind of connection pool (List of Connections) and need to block if all connections are checked. What is the correct way to synchronize the List to block, if size exceeds a limit or is zero? Thank you very much Jens

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  • Logging exceptions during bean injection

    - by Marc W
    I think this is a pretty basic question, but after Googling around I can't seem to find the answer. What I need is a way to log some custom output with log4j during Spring bean construction. I have a factory class called ResponderFactory (being used as an instance factory in Spring) with a factory method that can throw 2 different types of exception. public CollectorResponder collectorResponder(String inputQueueName) throws ConfigurationException, BrokerConnectionException {} Now, normally I could wrap a call to this method in a try-catch block with 2 catch clauses to handle the logging situations for each of the exceptions. However, if I'm using Spring to inject this CollectorResponder, created with the factory, into another class I don't see how this is possible. <bean id="responderFactory" class="com.package.ResponderFactory"> <constructor-arg index="0" ref="basicDispatcher" /> <constructor-arg index="1" value="http://localhost:9000" /> </bean> <bean id="collectorResponder" class="com.package.CollectorResponder" factory-bean="responderFactory" factory-method="collectorResponder"> <constructor-arg value="collector.in" /> </bean> <bean id="collectorConsumer" class="com.package.CollectorConsumer"> <constructor-arg ref="collectorResponder" /> </bean> Again, I want to catch these exceptions when the collectorResponder bean is instantiated. Right now I'm dealing with this is CollectorConsumer when I instantiate using new CollectorResponder(...). Is there any way I can do this?

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  • How can I implement a proper counter bean with EJB 3.0?

    - by Aaron Digulla
    I have this entity bean: import javax.persistence.*; @Entity public class CounterTest { private int id; private int counter; @Id public int getId() { return id; } public void setId(int id) { this.id = id; } public int getCounter() { return counter; } public void setCounter(int counter) { this.counter = counter; } } and this stateful bean to increment a counter: import java.rmi.RemoteException; import javax.ejb.*; import javax.persistence.*; @Stateful public class CounterTestBean implements CounterTestRemote { @PersistenceContext(unitName = "JavaEE") EntityManager manager; public void initDB() { CounterTest ct = new CounterTest(); ct.setNr(1); ct.setWert(1); manager.persist(ct); } public boolean testCounterWithLock() { try { CounterTest ct = manager.find(CounterTest.class, 1); manager.lock(ct, LockModeType.WRITE); int wert = ct.getWert(); ct.setWert(wert + 1); manager.flush(); return true; } catch (Throwable t) { return false; } } } When I call testCounterWithLock() from three threads 500 times each, the counter gets incremented between 13 and 1279 times. How do I fix this code so that it is incremented 1500 times?

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  • R: convert data.frame columns from factors to characters

    - by Mike Dewar
    Hi, I have a data frame. Let's call him bob: > head(bob) phenotype exclusion GSM399350 3- 4- 8- 25- 44+ 11b- 11c- 19- NK1.1- Gr1- TER119- GSM399351 3- 4- 8- 25- 44+ 11b- 11c- 19- NK1.1- Gr1- TER119- GSM399352 3- 4- 8- 25- 44+ 11b- 11c- 19- NK1.1- Gr1- TER119- GSM399353 3- 4- 8- 25+ 44+ 11b- 11c- 19- NK1.1- Gr1- TER119- GSM399354 3- 4- 8- 25+ 44+ 11b- 11c- 19- NK1.1- Gr1- TER119- GSM399355 3- 4- 8- 25+ 44+ 11b- 11c- 19- NK1.1- Gr1- TER119- I'd like to concatenate the rows of this data frame (this will be another question). But look: > class(bob$phenotype) [1] "factor" Bob's columns are factors. So, for example: > as.character(head(bob)) [1] "c(3, 3, 3, 6, 6, 6)" "c(3, 3, 3, 3, 3, 3)" [3] "c(29, 29, 29, 30, 30, 30)" I don't begin to understand this, but I guess these are indices into the levels of the factors of the columns (of the court of king caractacus) of bob? Not what I need. Strangely I can go through the columns of bob by hand, and do bob$phenotype <- as.character(bob$phenotype) which works fine. And, after some typing, I can get a data.frame whose columns are characters rather than factors. So my question is: how can I do this automatically? How do I convert a data.frame with factor columns into a data.frame with character columns without having to manually go through each column? Bonus question: why does the manual approach work?

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  • Declaring functors for comparison ??

    - by Mr.Gando
    Hello, I have seen other people questions but found none that applied to what I'm trying to achieve here. I'm trying to sort Entities via my EntityManager class using std::sort and a std::vector<Entity *> /*Entity.h*/ class Entity { public: float x,y; }; struct compareByX{ bool operator()(const GameEntity &a, const GameEntity &b) { return (a.x < b.x); } }; /*Class EntityManager that uses Entitiy*/ typedef std::vector<Entity *> ENTITY_VECTOR; //Entity reference vector class EntityManager: public Entity { private: ENTITY_VECTOR managedEntities; public: void sortEntitiesX(); }; void EntityManager::sortEntitiesX() { /*perform sorting of the entitiesList by their X value*/ compareByX comparer; std::sort(entityList.begin(), entityList.end(), comparer); } I'm getting a dozen of errors like : error: no match for call to '(compareByX) (GameEntity* const&, GameEntity* const&)' : note: candidates are: bool compareByX::operator()(const GameEntity&, const GameEntity&) I'm not sure but ENTITY_VECTOR is std::vector<Entity *> , and I don't know if that could be the problem when using the compareByX functor ? I'm pretty new to C++, so any kind of help is welcome.

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  • Method binding to base method in external library can't handle new virtual methods "between"

    - by Berg
    Lets say I have a library, version 1.0.0, with the following contents: public class Class1 { public virtual void Test() { Console.WriteLine( "Library:Class1 - Test" ); Console.WriteLine( "" ); } } public class Class2 : Class1 { } and I reference this library in a console application with the following contents: class Program { static void Main( string[] args ) { var c3 = new Class3(); c3.Test(); Console.ReadKey(); } } public class Class3 : ClassLibrary1.Class2 { public override void Test() { Console.WriteLine("Console:Class3 - Test"); base.Test(); } } Running the program will output the following: Console:Class3 - Test Library:Class1 - Test If I build a new version of the library, version 2.0.0, looking like this: public class Class1 { public virtual void Test() { Console.WriteLine( "Library:Class1 - Test V2" ); Console.WriteLine( "" ); } } public class Class2 : Class1 { public override void Test() { Console.WriteLine("Library:Class2 - Test V2"); base.Test(); } } and copy this version to the bin folder containing my console program and run it, the results are: Console:Class3 - Test Library:Class1 - Test V2 I.e, the Class2.Test method is never executed, the base.Test call in Class3.Test seems to be bound to Class1.Test since Class2.Test didn't exist when the console program was compiled. This was very surprising to me and could be a big problem in situations where you deploy new versions of a library without recompiling applications. Does anyone else have experience with this? Are there any good solutions? This makes it tempting to add empty overrides that just calls base in case I need to add some code at that level in the future...

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  • Design to distribute work when generating task oriented input for legacy dos application?

    - by TheDeeno
    I'm attempting to automate a really old dos application. I've decided the best way to do this is via input redirection. The legacy app (menu driven) has many tasks within tasks with branching logic. In order to easily understand and reuse the input for these tasks, I'd like to break them into bit size pieces. Since I'll need to start a fresh app on each run, repeating a context to consume a bit might be messy. I'd like to create an object model that: allows me to concentrate on the task at hand allows me to reuse common tasks from different start points prevents me from calling a task from the wrong start point To be more explicit, given I have the following task hierarchy: START A A1 A1a A1b A2 A2a B B1 B1a I'd like an object model that lets me generate an input file for task "A1b" buy using building blocks like: START -> do_A, do_A1, do_A1b but prevents me from: START -> do_A1 // because I'm assuming a different call chain from above This will help me write "do_A1b" because I can always assume the same starting context and will simplify writing "do_A1a" because it has THE SAME starting context. What patterns will help me out here? I'm using ruby at the moment so if dynamic language features can help, I'm game.

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  • Cannot show scene with Cocos2D when using UITabBarController

    - by gw1921
    Hi I'm new to Cocos2D but am having serious issues when trying to load a cocos scene in one of the UIViewControllers mixed with other normal UIKit UIViewControllers. My project uses a UITabBarController to manage four view controllers. Three are normal UIKit view controllers while one of them I want to use cocos2D for (to draw some sprites and animate them). The following is what I've done so far. In the applicationDidFinishLaunching method, I initialize cocos2D to use the window and take the first tabbarcontroller view: - (void)applicationDidFinishLaunching:(UIApplication *)application { if( ! [CCDirector setDirectorType:CCDirectorTypeDisplayLink] ) { [CCDirector setDirectorType:CCDirectorTypeDefault]; } [[CCDirector sharedDirector] setPixelFormat:kPixelFormatRGBA8888]; [CCTexture2D setDefaultAlphaPixelFormat:kTexture2DPixelFormat_RGBA8888]; [[CCDirector sharedDirector] setDisplayFPS:YES]; [[CCDirector sharedDirector] attachInView: window]; [[[CCDirector sharedDirector] openGLView] addSubview: tabBarController.view]; [window makeKeyAndVisible]; } Then in the third UIViewController code (where I want to use cocos2D) I do this (note: the view is being loaded from a NIB file which has a blank UIView and nothing else):\ - (void)viewDidLoad { [super viewDidLoad]; // 'scene' is an autorelease object. CCScene *myScene = [CCScene node]; // 'layer' is an autorelease object. MyLayer *myLayer = [MyLayer node]; // add layer as a child to scene [myScene addChild: myLayer]; [[CCDirector sharedDirector] runWithScene: myScene]; } However all I see is a blank white view and nothing else. If I call the following in viewdidLoad: [[CCDirector sharedDirector] attachInView: self.view]; The app crashes complaining that CCDirector is already attached. Please help!

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  • How can I get the Name of the Program associated with a file extension using Delphi?

    - by lkessler
    I need to get the name of the program currently associated with a file extension for the current user. If you right-click on a file and select properties, then what I need is the program name that is to the right of the "Opens with" line. e.g. For ".xls", I want to be able to get the answer "Microsoft Office Excel", or whatever program the user has as their default program to open .xls files. I have determined it's not as easy as just going into HKEY_CLASSES_ROOT and picking it out, since it may also be specified in HKEY_LOCAL_MACHINE or HKEY_CURRENT_USER or HKEY_USERS. Maybe all I need to know is the pecking order used by Windows to determine this and how to get to each of the locations. Of course, a Windows API call to do this would be ideal. This is a similar question to: How to get icon and description from file extension using Delphi? but that question only answered how to get the description of the extension and the icon of the associated program. I couldn't find a way to extend that to also get the name of the associated program.

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  • Problems with WCF endpoints hosted from Windows Service

    - by Dilip
    I have a managed Windows Service that hosts a couple of WCF endpoints. The service is set to start automatically when the PC is restarted. On reboot I find that this line of code: ServiceHost wcfHost1 = new ServiceHost(typeof(WCFHost1)); in the OnStart() method of the service takes somewhere between 15 - 20 seconds to execute. Actually I have two such statements but the second one executes in a flash. It is the first one that takes so long. Does anyone know what could be causing the bottleneck? Because of this, sometimes the call exceeds 30 seconds and as a result the SCM thinks my service timed out while trying to initialize itself. Now, I know its easy for me to just spin off a thread to do this and return from OnStart() right away but I'd like to know what could cause this delay. This happens only when the service starts up on PC reboot. If the PC is up and running, the service starts & stops in less than a second.

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  • Passing control references as ref parameters

    - by Enmanuel
    Hi everyone. Please help me out here because im getting kind of confused.. I have a form in a C# winforms project and a couple of methods that are suposed to perform some tasks for this particular form and all derived ones, so one of those helper methods can make the example.. this one should fill comboboxes with a dataset. Its working properly now but when i coded the method with this signature protected void FillComboBox(kComboBox target, IEntClass_DA entity) { target.DataSource = entity.GetList().Tables[0]; target.DisplayMember = "name"; target.ValueMember = "id"; } I saw that the displayMember and ValueMember in the comboboxes were not holding the values after the method call. I just thought I should use ref parameters so the asignments are not wasted in read-only reference variables. It was ok by then but later, making an exercise of passing the whole form as a parameter I was warned by the compiler with the notice that this could not be passed as a ref parameter because it is read-only. Fine then, I keep working and see that even without the ref keyword i can use the ref variable from the form, update some properties and see the changes. So whats happening here: passing a reference of the control to the helper method gives me ability to change its members even when not using the ref parameter?? Thanks.

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  • C# Reflection StackTrace get value

    - by John
    I'm making pretty heavy use of reflection in my current project to greatly simplify communication between my controllers and the wcf services. What I want to do now is to obtain a value from the Session within an object that has no direct access to HttpSessionStateBase (IE: Not a controller). For example, a ViewModel. I could pass it in or pass a reference to it etc. but that is not optimal in my situation. Since everything comes from a Controller at some point in my scenario I can do the following to walk the sack to the controller where the call originated, pretty simple stuff: var trace = new System.Diagnostics.StackTrace(); foreach (var frame in trace.GetFrames()) { var type = frame.GetMethod().DeclaringType; var prop = type.GetProperty("Session"); if(prop != null) { // not sure about this part... var value = prop.GetValue(type, null); break; } } The trouble here is that I can't seem to work out how to get the "instance" of the controller or the Session property so that I can read from it.

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  • Excel COM Add-In dialog interrupts script

    - by usac
    Hi all! I have written an Excel COM Add-In in C++ for automation of Excel with VBA. It contains an own dialog showing some general informations about the Add-In. Now i create a button in Excel that opens the dialog. Leaving the dialog with the escape key leads to an Excel message that the script is being interrupted instead of just closing the dialog. I could suppress the interruption message with: Application.EnableCancelKey = xlDisabled But that seems not to be the solution as the script can not be interrupted any more. Here is an example how i use VBA to open the dialog: Private Sub ShowAboutDialog_Click() Dim oComAddIn As COMAddIn Set oComAddIn = Application.COMAddIns.Item("MyComAddIn.Example") oComAddIn.Connect = True Call oComAddIn.Object.ShowAboutDlg End Sub My guess is that the problem is somewhere in the message handler of the dialog: INT_PTR CALLBACK CAboutDialog::AboutDlg( HWND hwndDlg, UINT uMsg, WPARAM wParam, LPARAM lParam) { switch(uMsg) { ... case WM_COMMAND: if (LOWORD(wParam) == IDOK || LOWORD(wParam) == IDCANCEL) { // Here, the ESCAPE key should also be trapped? EndDialog(hwndDlg, LOWORD(wParam)); return TRUE; } ... } return FALSE; } The Dialog is created with: DialogBox(g_hModule, MAKEINTRESOURCE(IDD_ABOUT), hWndParent, (DLGPROC)AboutDlg) Thanks a lot!

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  • iPhone: Remove annotation from MKMapView which is in another view

    - by Nic Hubbard
    I have two views. The first is a MKMapView with some annotations. Clicking a UIButton pushes a second view on the stack. This has a UITableView with a list of annotations which correspond to the map annotations. So, when you click the delete button, how can I call my MKMapView which is in another view, so that I can remove the annotation. My MKMapView is declared in my app delegate, as well as my current class. I am trying to use the following, but it is not working: RideAppDelegate *appDelegate = (RideAppDelegate *)[[UIApplication sharedApplication] delegate]; Annotation *ano; CLLocationCoordinate2D anoPoint; anoPoint.latitude = [[eventToDelete valueForKey:@"latitude"] doubleValue]; anoPoint.longitude = [[eventToDelete valueForKey:@"longitude"] doubleValue]; ano = [[[Annotation alloc] init] autorelease]; ano.coordinate = anoPoint; [appDelegate.ridesMap removeAnnotation: ano]; [appDelegate release]; I must be trying to access the MKMapView of my other view incorrectly?

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  • Conditions with common logic: question of style, readability, efficiency, ...

    - by cdonner
    I have conditional logic that requires pre-processing that is common to each of the conditions (instantiating objects, database lookups etc). I can think of 3 possible ways to do this, but each has a flaw: Option 1 if A prepare processing do A logic else if B prepare processing do B logic else if C prepare processing do C logic // else do nothing end The flaw with option 1 is that the expensive code is redundant. Option 2 prepare processing // not necessary unless A, B, or C if A do A logic else if B do B logic else if C do C logic // else do nothing end The flaw with option 2 is that the expensive code runs even when neither A, B or C is true Option 3 if (A, B, or C) prepare processing end if A do A logic else if B do B logic else if C do C logic end The flaw with option 3 is that the conditions for A, B, C are being evaluated twice. The evaluation is also costly. Now that I think about it, there is a variant of option 3 that I call option 4: Option 4 if (A, B, or C) prepare processing if A set D else if B set E else if C set F end end if D do A logic else if E do B logic else if F do C logic end While this does address the costly evaluations of A, B, and C, it makes the whole thing more ugly and I don't like it. How would you rank the options, and are there any others that I am not seeing?

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  • Android change context for findViewById to super from inline class

    - by wuntee
    I am trying to get the value of a EditText in a dialog box. A the "*"'ed line in the following code, the safeNameEditText is null; i am assuming because the 'findVeiwById' is searching on the context of the 'AlertDialog.OnClickListener'; How can I get/change the context of that 'findViewById' call? protected Dialog onCreateDialog(int id) { AlertDialog.Builder builder = new AlertDialog.Builder(this); switch(id){ case DIALOG_NEW_SAFE: builder.setTitle(R.string.news_safe); builder.setIcon(android.R.drawable.ic_menu_add); LayoutInflater factory = LayoutInflater.from(this); View newSafeView = factory.inflate(R.layout.newsafe, null); builder.setView(newSafeView); builder.setPositiveButton(R.string.ok, new AlertDialog.OnClickListener(){ public void onClick(DialogInterface dialog, int which) { * EditText safeNameEditText = (EditText) findViewById(R.id.new_safe_name); String safeName = safeNameEditText.getText().toString(); Log.i(LOG, safeName); setSafeDao(safeName); } }); builder.setNegativeButton(R.string.cancel, new AlertDialog.OnClickListener(){ public void onClick(DialogInterface dialog, int which) { dialog.dismiss(); } }); return(builder.create()); default: return(null); } }

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